Problems from 2021 ICPC North America Regional Programming Contests (March 5 2022)

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Archery Accuracy0.018711363526%6.9Harden
Average Character0.0054480181741%2.0Easyen
Black and White0.0759243018242%4.8Mediumen
Circle Bounce0.0020021511051%4.8Mediumen
Diagonals0.0018532046733%7.2Harden
Dorm Room Divide0.03476167221913%6.7Harden
Double Password0.0054290250158%1.5Easyen
Fail Them All!0.0089946911525%8.0Harden
Hopscotch 5000.1187864614022%7.3Harden
Overdraft0.0053024123941%2.1Easyen
Problem Set Construction0.01940804050%6.9Harden
Reversibly Cyclic Strings0.00569631445%3.2Mediumen
Rise and Fall0.0088112427024%4.6Mediumen
Scaling Recipe0.005192288546%1.9Easyen
Shortest Missing Subsequences0.0939437411731%6.0Harden
Square Bounce0.005031645433%6.3Harden
Tetris Generation0.0090122430025%6.0Harden
Tournament Seeding0.0322051122845%4.0Mediumen
Tree Hopping0.0289397528830%6.3Harden
Who Goes There?0.00119129541132%4.0Mediumen
XOR Island0.0029130310434%7.2Harden